103721126 has 4 divisors (see below), whose sum is σ = 155581692. Its totient is φ = 51860562.

The previous prime is 103721119. The next prime is 103721129. The reversal of 103721126 is 621127301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 621127301 = 239 ⋅2598859.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103721129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25930280 + ... + 25930283.

It is an arithmetic number, because the mean of its divisors is an integer number (38895423).

Almost surely, 2^103721126 is an apocalyptic number.

103721126 is a deficient number, since it is larger than the sum of its proper divisors (51860566).

103721126 is an equidigital number, since it uses as much as digits as its factorization.

103721126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51860565.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 103721126 is about 10184.3569261883. The cubic root of 103721126 is about 469.8462240249.

Adding to 103721126 its reverse (621127301), we get a palindrome (724848427).

The spelling of 103721126 in words is "one hundred three million, seven hundred twenty-one thousand, one hundred twenty-six".